We've been using our City Mini since DS was six days old, and given its weight limit of 50 pounds, I expect him to be able to use it for some time. We did not use it with an infant carseat, but has an adapter that can be used for that purpose. It has a large sunshade and reclines flat, so nap time while on the go is easy. It's lightweight and folds with one hand. Steering is great. DH and I both love it and are very happy with our decision.